Currently, there’s no automatic post-import processing. However, it is possible to manually invoke some custom wikitext scripting after files have been imported:
Put the following in a tiddler (e.g., “AfterImportActions”)
<!-- GET A LIST OF IMPORTED TIDDLERS BY PARSING THE "AFTER IMPORT" CONTENTS OF $:/Import -->
<$set name=tids filter="[[$:/Import]get[text]splitregexp[\n]removeprefix[#]enlist-input[]]">
<!-- SHOW A BUTTON TO TRIGGER CUSTOM ACTIONS ON ALL IMPORTED TIDDLERS -->
<$button> do After Import actions
<!-- FOR EACH IMPORTED TIDDLER -->
<$list filter="[enlist<tids>]" variable="tid">
<!-- CUSTOM ACTION EXAMPLE: "If tiddler type is an image, add image tag"
<$list filter="[<tid>is[image]]">
<$action-listops $tiddler=<<tid>> $field="tags" $subfilter="image"/>
</$list>
<!-- END OF CUSTOM ACTIONS -->
</$list>
</$button>
enjoy,
-e